| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| ARROWSMITH ENGINEERING AND CONSULTANTS LIMITED | 01555389 | 01/11/2007 | Bronze |
| C.RAYMENT(PRECISION ENGINEERING)LIMITED | 00813866 | 28/09/2018 | Strike Off |
| CLEMENT CLARKE COMMUNICATIONS LIMITED | 09377876 | 07/01/2015 | Bronze |
| Clover Solutions | 04142117 | 28/03/2007 | Dissolved |
| E.D.S. ENGINEERING LIMITED | 02142541 | 14/02/2018 | Bronze |
| FLYCOM AVIONICS LIMITED | 04853000 | 30/01/2015 | Gold |
| Frosted Glass | 04259376 | 28/03/2007 | Dissolved |
| H.B.S. ELECTRONICS LIMITED | 05089025 | 14/01/2014 | Silver |
| HBSEH VENTURES LIMITED | 04783710 | 04/07/2016 | Dissolved |
| HEADSET SERVICES LTD. | 02962104 | 31/05/2007 | Gold |
| LAURENCE LETTINGS LIMITED | 14849878 | 05/05/2023 | Bronze |
| LAURENCE WALTER LIMITED | 05777178 | 11/04/2006 | Silver |
| LINTON PLASTIC MOULDERS LIMITED | 01505843 | 07/04/2014 | Bronze |
| MEL AVIATION LIMITED | 00939400 | 28/02/1992 | Gold |
| NORTH WEST AERODYNAMIC MODELS LIMITED | 02802455 | 31/03/2008 | Dissolved |
| OLDBURY ENGINEERING CO.,LIMITED | 00414684 | 19/05/2017 | Gold |
| REDMAYNE ENGINEERING LIMITED | 00745097 | 01/09/2017 | Silver |
| REDMAYNE HGS LIMITED | 06523205 | 01/09/2017 | Gold |
| RELIANT DESIGN DEVELOPMENT CO.LIMITED | 00704108 | 08/02/2007 | Dissolved |
| SENSORCOM LIMITED | 03991038 | 01/09/2015 | Bronze |
| SMA PLASTICS LIMITED | 13435270 | 02/06/2021 | One Red Flag |
| THE MOBILEMAIL TECHNOLOGY PARTNERSHIP LLP | OC305677 | 25/03/2004 | Dissolved |
| TRENT AERO ENGINEERING LIMITED | 01420006 | 20/12/2006 | Dissolved |
| Top Degree | 04488364 | 28/03/2007 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| AFC SUDBURY LIMITED | 00500191 | 24/04/2001 | 16/07/2002 | One Red Flag |
| Castlegate 352 | 05295255 | 26/11/2004 | 29/11/2004 | Dissolved |
| DIDSBURY ENGINEERING CO.LIMITED | 00371191 | 04/07/2016 | 03/03/2023 | Silver |
| MEL AVIATION COMPONENTS LIMITED | 08488525 | 15/04/2013 | 10/03/2020 | Silver |